The ZANheadgear® SportFlex™ Series Fleece Lined Beanie provides comfort and extra warmth. Flat seams in order to fit comfortably underneath helmets or alone while providing coverage of the head and ears. Fabric is brushed for ultimate softness and has a 4 way stretch for customizable fit. 50+ UV Protection. Materials: Inside-100% Polyester. Outside-87% Polyester, 13% Elastane.